[PATCH 2 of 4] Fix up walk and changes code

[Bryan O'Sullivan]

On Mon, 2005-08-01 at 11:26 -0700, Matt Mackall wrote:

> He's saying you're mixing the old style (map) with the new style (list
> comprehensions).

Ah.  I've pulled Thomas's "fix", just to keep everyone happy :-)

Results are at http://www.serpentine.com/hg

	<b